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Though I’ve been an avid walker (and sometime runner), I had never set foot in a gym a day in my life, until I did so for the first time at age 56. Sure, I had walked or driven past many gyms in storefronts, with the line-ups of people running on treadmills or flopping around on the elliptical machines.

Frankly, they were frightening. My first time in the gym, it was overwhelming. My son is afraid of spiders. I’m not, but walking through the gym for the first time, looking at all the spindly machines with the stacks of weights, it looked like I was walking into some kind of infestation. How do you even begin to contemplate what to do with all that stuff?

More specifically, back to the topic of this blog post, what’s the best kind of exercise to do after age 50?

The short answer might be: “the exercise that you do”. A somewhat longer answer will be, strength training has particular benefits you can’t get from cardio, cardio has particular benefits that you can’t get from strength training, and the beneficial effects of the two seem to cancel each other out.

That is, on a surface level, strength training puts on weight that hinders your endurance, and cardio tends to draw down muscular gains.

The big question is, how do you navigate this gulf?

I don’t yet have all the right answers – ha ha – that’s why this is still a big question. One consideration is that at this age, you’re not looking to become world-class in either endurance or strength training. Another short answer might be “it depends on where your goals lie”, and to a larger degree, this is correct.

But there we have to take another step back. “If I want to be healthy into old age, what should my goals be?”

At this point in my life, it’s an easy question to answer. My kids have talked me into running a Tough Mudder race with them, and so for most of this year, that settles it. Training for a Tough Mudder event, I have to be cognizant of both.

It still doesn’t say what’s the best way to train for older age. The authors of “Younger Next Year” seem to draw the line at 45 minutes of exercise, six days a week:

One simple rule to learn (and follow when all else fails) before you get lost or bored or decide to go have a drink. It goes like this: Exercise six days a week for the rest of your life (emphasis in original). Sorry, but that’s it. No negotiations. No give. No excuses. Six days, serious exercise, until you die. Well, if you’re still in your forties and stretched to the breaking point with work, kids and travel, we can talk about four or five days, but six is much better even then. And after age fifty, six is mandatory. By then the tide is starting to pick up, and you need help staying off the rocks. In fact, my version of the rule would have been “Exercise hard six days a week,” but Harry convinced me that that would scare the horses. (Crowley, Chris; Lodge, Henry S., Younger Next Year: A Guide to Living Like 50 Until You’re 80 and Beyond (pp. 49-50). Workman Publishing Company. Kindle Edition.)

But here is the key: following “Rule Number One” “gives you the strength, the optimism, and the flexibility” to do everything else you want to do in life.

This brings you to another one of those paradoxes. I don’t yet know all the answers about “what kind of exercise” or “how much to exercise”, but with respect to strength training, three to four days a week is enough, and more than enough, not only “to exercise” but “to train”. And that leaves another three days to go. There’s a difference here, too.

It works out nicely: three days of strength training, three days of cardio. A couple of key rules of thumb that I might add are: Don’t overdo it. Don’t get hurt. “The one who fights and runs away lives to fight another day”. If there’s anything at all that I know, that’s what it comes down to.